Intermec 751G 用户手册

Should you want your 751G to display a full screen, use the following links. 
These give full instructions on how to display full screen.

• Instructions on how to create a full screen application for eVC++ 

applications using an SHFullScreen() API:

• Instructions on how to create a full screen application for eVB 

applications also using the SHFullScreen() API:

This describes the KernelIoControl() functions available to application 
programmers. Most C++ applications will need to prototype the function 
as the following to avoid link and compile errors.

extern “C” BOOL KernelIoControl(DWORD dwIoControlCode, LPVOID lpInBuf, DWORD 
nInBufSize, LPVOID lpOutBuf, DWORD nOutBufSize, LPDWORD lpBytesReturned);

You can also see the Device Resource Kit in the Intermec Developer 
Library (IDL) for information about these functions. The IDL is available 
as a download from the Intermec web site at 

. 

Contact your Intermec representative for more information.

This IOCTL returns either the platform type or the OEMPLATFORM 
name based on an input value.

BOOL KernelIoControl( IOCTL_HAL_GET_DEVICE_INFO, LPVOID 
lpInBuf, DWORD nInBufSize, LPVOID lpOutBuf, DWORD 
nOutBufSize, LPDWORD lpBytesReturned );

Returns TRUE if function succeeds. Returns FALSE if the function fails. 
GetLastError() may be used to get the extended error value.

lpInBuf

Points to a DWORD containing either the 
SPI_GETPLATFORMTYPE or SPI_GETOEMINFO value.

lpInBufSize

Must be set to sizeof(DWORD).

lpOutBuf

Must point to a buffer large enough to hold the return data of the 
function. If SPI_GETPLATFORMTYPE is specified in lpInBuf, 
then the “PocketPC\0” Unicode string is returned. If 
SPI_GETOEMINFO is specified in lpInBuf, then the “Intermec 
700\0” Unicode string is returned.

nOutBufSize

The size of lpOutBuf in bytes. Must be large enough to hold the 
string returned.

lpBytesReturned

The actual number of bytes returned by the function for the data 
requested.